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12 February 2009 C12-PTV with controlled regioregularity for photovoltaic application
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Regioregular monosubstituted polythienylvinylene (PTV) is a potentially important class of low band-gap conjugated polymers for photovoltaic research. We have recently reported the synthesis of a fully head-to-tail regioregular dodecyl-substituted PTV (HT-HT PDDTV). To balance high crystallization tendency and solution processibility, a series of PDDTV with controlled regioregularity have been synthesized using two isomeric co-monomers with molar ratios from 0:1, 1:9, 2:8, 3:7, 4:6 to 5:5, and solubility increases from less than 2 mg/mL to greater than 20 mg/mL in chloroform. The polymers are studied by 1H and 13C NMR, UV-Vis absorption spectroscopy, differential scanning calorimetry and gel permeation chromatography. Preliminary study of photovoltaic performance has been conducted for 5:5 PDDTV.
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Cheng Zhang, Eric Annih, Rui Li, and Sam-Shajing Sun "C12-PTV with controlled regioregularity for photovoltaic application", Proc. SPIE 7213, Organic Photonic Materials and Devices XI, 721309 (12 February 2009);

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